Bed



FIG. 1 is a right elevational view of a bed;

FIG. 2 is a bottom plan view of a bed;

FIG. 3 is a front elevational view of a bed;

FIG. 4 is a top plan view of a bed;

FIG. 5 is a left elevational view of a bed; and,

FIG. 6 is a back elevational view of a bed.

The broken lines in the Figures are used for environmental purposes only and form no part of the claimed design. 

The ornamental design for a “bed,” as shown and described. 